<template>
 <div>
    <div class="search">
        <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音">
    </div>
    <div class="search-content" ref="search" v-show="keyword">
        <ul>
            <li class="search-item border-bottom" 
            v-for="item of list" 
            :key="item.id"
            @click="handleCityClick(item.name)">{{item.name}}</li>
            <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
        </ul>
    </div>
 </div>
</template>
<script>
import BScroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
    name:"CitySearch",
    props:{
        cities:Object
    },
    data() {
        return {
            keyword:'',
            list:[],
            timer:null
        }
    },
    computed: {
        hasNoData () {
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            if(this.timer) {
                clearTimeout(this.timer)
            }
            if (!this.keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let i in this.cities) {
                    this.cities[i].forEach((value) => {
                        if(value.spell.indexOf(this.keyword) > -1 ||
                        value.name.indexOf(this.keyword) > -1) {
                            result.push(value)
                        }
                    })
                }
                this.list = result
            }, 100);
        }
    },
    methods: {
        handleCityClick (city) {
        this.$store.commit('changeCity',city)
        this.$router.push('/')
      },
      handleCityClick (city) {
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    mounted () {
        this.scroll = new BScroll(this.$refs.search)
    },
}
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.search
  height :.72rem
  padding :0 .1rem
  background :$bgColor
  .search-input
    box-sizing :border-box
    height :.62rem
    padding :0 .5rem
    line-height :.62rem
    width :100%
    text-align :center
    border-radius :.06rem
    color :#666
    touch-action: none;
.search-content
  z-index :1
  overflow :hidden
  position :absolute
  top :1.58rem
  left :0
  right :0
  bottom :0
  background :#eee
  .search-item
    line-height :.62rem
    padding-left :.2rem
    background :#fff
    color :#666
</style>